rf-chopper system

Good agreement between the theoretical analysis and experimental results for the~ 1H/~ 31P four-ring birdcage coil for a 1.5 T MRI system shows that the generalized equivalent circuit model is acceptably accurate for simulating the performance of double-tuned RF coils.

在1.5T磁共振成像系统的双调谐四端环鸟笼线圈的设计中，仿真和实验结果的偏差小于2%，即等效电路法可以高效地获得足够近似的分析结果。

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SimpliSafe, winner of our Editor's Choice distinction, utilizes a special system that's capable of separating incidental RF interference from targeted jamming attacks.

Simplisafe系统获得了我们“编辑推荐奖”的殊荣，它应用一个特殊的系统，能够分离出来自目标信号攻击者的偶然的无线电频率干扰。

四级真题- 2016年 12月 1卷 信息匹配

The constructed β-NMR and β-NQR set-up is mainly composed of the strong magnetic field and target chamber system, the beam pulsing system, the rf and its control system, and β-detection and data acquisition system.

建立的β-NMR及β-NQR装置主要包含强磁场和靶室系统、脉冲束系统、rf（高频）及其控制系统、β-探测器和数据获取系统。

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This paper introduces the RF absorbing and cooling system, and safety policy, namely by RF load, the energy of incident electromagnetic wave could be turned into other types of energy and dissipated.

文章研究了通讯卫星真空热试验时高功率射频RF的吸收冷却措施及安全策略，即通过RF负载及冷媒，将入射的电磁波能量转化为其它形式的能量（主要是热能）而损耗掉。

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It caught us in the act, sent an alert to my smartphone, and also listed our RF interference on the system's event log.

它在运行中搜索到了我们，并向我的手机发出警报，并在系统的事件记录中列出了我们的无线电干扰。

四级真题- 2016年 12月 1卷 信息匹配

The main components in a test system may include DC bias, DC measurement, RF power meter, network analyzer, RF sources, and other instruments.

一个测试系统中的主要部分可能包括直流偏压、直流测量、RF功率计、网络分析仪、RF源，以及其它仪器。

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Selling meals system of campus canteen based on CAN bus and RF card

基于CAN总线和射频卡的校园食堂售饭系统

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The test principles and test methods of the antenna and satellite RF system in Compensated Compact Range are summarized, and the test errors are analyzed.

概要讲述了利用紧缩场进行卫星整星状态下的天线及卫星系统测试的原理及方法。文章还对该紧缩场的测试误差进行了全面的分析。

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The simulation of RF environment is an important part in radar electronic combat ( EC) simulation system, while simulation of RF environment effects is one of its important components.

射频环境仿真是雷达电子战仿真系统的重要组成部分，而射频环境效应仿真是射频环境仿真的主要内容之一。

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This paper introduces the technology of RF-SIM card, and based on current VIP system, advances the design scheme of VIP system based on RF-SIM card, and gives the general design mode.

简要介绍了RF-SIM卡技术，在现有VIP系统的基础上，提出了基于RF-SIM卡技术的VIP系统的设计方案，并给出了总体设计模式。

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